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Comparison of clinical characteristics between the classical KFS and Klinefelter variants
| Clinical features | Classical KT (n=38) | Variant KT (n=6) |
|---|---|---|
| Age at presentation | >20 years | <7 years |
| Major concern at presentation | Hypogonadism and infertility | Non-gonadal issues |
| Behavioral issues | 14 (36.8%) | 5 (83.3%) |
| Cardiac anomalies | 6 (15.7%) | 4 (66.6%) |
KT=Karyotype
